/*******************************************************************************
 * Copyright 2017 Bstek
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License.  You may obtain a copy
 * of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations under
 * the License.
 ******************************************************************************/
package com.bstek.urule.model.flow;

import com.bstek.urule.model.flow.ins.FlowContext;
import com.bstek.urule.model.flow.ins.FlowInstance;

import java.util.ArrayList;
import java.util.List;

/**
 * @author Jacky.gao
 * @since 2015年4月20日
 */
public class ForkNode extends FlowNode {
    private FlowNodeType type = FlowNodeType.Fork;

    public ForkNode() {
    }

    public ForkNode(String name) {
        super(name);
    }

    @Override
    public FlowNodeType getType() {
        return type;
    }

    @Override
    public void enterNode(FlowContext context, FlowInstance instance) {
        instance.setCurrentNode(this);
        executeNodeEvent(EventType.enter, context, instance);
        List<Connection> forkConnections = new ArrayList<Connection>();
        for (Connection connection : connections) {
            if (connection.evaluate(context)) {
                forkConnections.add(connection);
            }
        }
        executeNodeEvent(EventType.leave, context, instance);
        int childCount = forkConnections.size();
        for (Connection connection : forkConnections) {
            FlowInstance newChildInstance = instance.newChildInstance(childCount);
            connection.execute(context, newChildInstance);
        }
    }
}
